3497891cf9
As P. T. Barnoom famously said, "write what you like but spell my name correctly". Following that, we correct the spelling of Barrett's name in the source tree. Closes #11989
103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#define BOOST_TEST_MODULE core
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#include <boost/test/unit_test.hpp>
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#include "utils/crc.hh"
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#include "utils/clmul.hh"
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#include "utils/gz/barrett.hh"
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#include <seastar/core/print.hh>
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constexpr uint32_t input_32_1_c = 0x12345678;
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uint32_t input_32_1 = input_32_1_c; // NOT constexpr
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constexpr uint32_t input_32_2_c = 0xabcdef12;
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uint32_t input_32_2 = input_32_2_c; // NOT constexpr
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constexpr uint64_t input_64_1_c = 0x1234567890abcdef;
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uint64_t input_64_1 = input_64_1_c; // NOT constexpr
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BOOST_AUTO_TEST_CASE(clmul_u32_constexpr_equals_native) {
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constexpr auto constexpr_result = clmul(input_32_1_c, input_32_2_c);
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BOOST_REQUIRE_EQUAL(clmul(input_32_1, input_32_2), constexpr_result);
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}
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BOOST_AUTO_TEST_CASE(barrett_fold_constexpr_equals_native) {
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constexpr auto constexpr_result = crc32_fold_barrett_u64(input_64_1_c);
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BOOST_REQUIRE_EQUAL(crc32_fold_barrett_u64(input_64_1), constexpr_result);
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}
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inline
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uint32_t
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do_compute_crc(utils::crc32& c) {
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return c.get();
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}
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template <typename T, typename... Rest>
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inline
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uint32_t
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do_compute_crc(utils::crc32& c, const T& val, const Rest&... rest) {
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c.process_le(val);
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return do_compute_crc(c, rest...);
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}
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template <typename... T>
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inline
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uint32_t
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compute_crc(const T&... vals) {
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utils::crc32 c;
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return do_compute_crc(c, vals...);
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}
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BOOST_AUTO_TEST_CASE(crc_1_vs_4) {
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using b = uint8_t;
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BOOST_REQUIRE_EQUAL(compute_crc(0x01020304), compute_crc(b(4), b(3), b(2), b(1)));
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}
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BOOST_AUTO_TEST_CASE(crc_121_vs_4) {
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using b = uint8_t;
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using w = uint16_t;
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BOOST_REQUIRE_EQUAL(compute_crc(0x01020304), compute_crc(b(4), w(0x0203), b(1)));
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}
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BOOST_AUTO_TEST_CASE(crc_44_vs_8) {
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using q = uint64_t;
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BOOST_REQUIRE_EQUAL(compute_crc(q(0x0102030405060708)), compute_crc(0x05060708, 0x01020304));
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}
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// Test crc32::process()
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BOOST_AUTO_TEST_CASE(crc_process) {
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const size_t max_size = 7 + 4096 + 31; // cover all code path
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const size_t test_sizes[] = {
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0, 1, 8, 9, 1023, 1024, 1025, 1032, 1033, 4095, 4096, 4097, max_size
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};
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// Create data buffer offset 8 bytes boundary by 1 byte
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uint64_t data64[max_size/8 + 2];
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uint8_t *data = (reinterpret_cast<uint8_t*>(data64)) + 1;
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// Fill data with test pattern
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for (size_t i = 0; i < max_size; ++i) {
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data[i] = i + 1;
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}
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for (size_t size : test_sizes) {
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utils::crc32 c1, c2;
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// Get correct answer with simplest method
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for (size_t i = 0; i < size; ++i) {
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c1.process_le(data[i]);
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}
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// Calculate crc by optimized routine
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c2.process(data, size);
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BOOST_REQUIRE_EQUAL(c1.get(), c2.get());
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}
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}
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